Optical image capturing system

ABSTRACT

The invention discloses a three-piece optical lens for capturing image and a three-piece optical module for capturing image, which include, along the optical axis in order from an object side to an image side, a first lens with positive refractive power having an object-side surface which can be convex; a second lens with refractive power; a third lens with refractive power; two surfaces of each of the three lenses can be both aspheric. The third lens can have positive refractive power, wherein an image-side surface thereof can be concave, and both surfaces thereof are aspheric; at least one surface of the third lens has an inflection point. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.

BACKGROUND OF THE INVENTION

1. Technical Field

The present invention relates generally to an optical system, and moreparticularly to a compact optical image capturing system for anelectronic device.

2. Description of Related Art

In recent years, with the rise of portable electronic devices havingcamera functionalities, the demand for an optical image capturing systemis raised gradually. The image sensing device of ordinary photographingcamera is commonly selected from charge coupled device (CCD) orcomplementary metal-oxide semiconductor sensor (CMOS Sensor). Inaddition, as advanced semiconductor manufacturing technology enables theminimization of pixel size of the image sensing device, the developmentof the optical image capturing system towards the field of high pixels.Therefore, the requirement for high imaging quality is rapidly raised.

The conventional optical system of the portable electronic deviceusually has a two-piece lens. However, the optical system is asked totake pictures in a dark environment, in other words, the optical systemis asked to have a large aperture. An optical system with large apertureusually has several problems, such as large aberration, poor imagequality at periphery of the image, and hard to manufacture. In addition,an optical system of wide-angle usually has large distortion. Therefore,the conventional optical system provides high optical performance asrequired.

It is an important issue to increase the quantity of light entering thelens and the angle of field of the lens. In addition, the modern lens isalso asked to have several characters, including high pixels, high imagequality, small in size, and high optical performance.

BRIEF SUMMARY OF THE INVENTION

The aspect of preferred embodiment of the present disclosure directs toan optical image capturing system and an optical image capturing lenswhich use combination of refractive powers, convex and concave surfacesof three-piece optical lenses (the convex or concave surface in thedisclosure denotes the geometrical shape of an image-side surface or anobject-side surface of each lens on an optical axis) to increase thequantity of incoming light of the optical image capturing system, and toimprove imaging quality for image formation, so as to be applied tominimized electronic products.

The term and its definition to the lens parameter in the preferredembodiment of the present are shown as below for further reference.

The lens parameter related to a length or a height in the lens element:

A height for image formation of the optical image capturing system isdenoted by HOI. A height of the optical image capturing system isdenoted by HOS. A distance from the object-side surface of the firstlens element to the image-side surface of the third lens element isdenoted by InTL. A distance from the image-side surface of the thirdlens to the image plane is denoted by InB. InTL+InB=HOS. A distance fromthe first lens element to the second lens element is denoted by IN12(instance). A central thickness of the first lens element of the opticalimage capturing system on the optical axis is denoted by TP1 (instance).

The lens parameter related to a material in the lens:

An Abbe number of the first lens element in the optical image capturingsystem is denoted by NA1 (instance). A refractive index of the firstlens element is denoted by Nd1 (instance).

The lens parameter related to a view angle in the lens:

A view angle is denoted by AF. Half of the view angle is denoted by HAF.A major light angle is denoted by MRA.

The lens parameter related to exit/entrance pupil in the lens

An entrance pupil diameter of the optical image capturing system isdenoted by HEP.

The lens parameter related to a depth of the lens shape

A distance in parallel with an optical axis from a maximum effectivesemi diameter position to an axial point on the object-side surface ofthe third lens is denoted by InRS31 (instance). A distance in parallelwith an optical axis from a maximum effective semi diameter position toan axial point on the image-side surface of the third lens is denoted byInRS32 (instance).

The lens parameter related to the lens shape:

A critical point C is a tangent point on a surface of a specific lens,and the tangent point is tangent to a plane perpendicular to the opticalaxis and the tangent point cannot be a crossover point on the opticalaxis. To follow the past, a distance perpendicular to the optical axisbetween a critical point C21 on the object-side surface of the secondlens and the optical axis is HVT21 (instance). A distance perpendicularto the optical axis between a critical point C22 on the image-sidesurface of the second lens and the optical axis is HVT22 (instance). Adistance perpendicular to the optical axis between a critical point C31on the object-side surface of the third lens and the optical axis isHVT31 (instance). A distance perpendicular to the optical axis between acritical point C32 on the image-side surface of the third lens and theoptical axis is HVT32 (instance). The object-side surface of the thirdlens has one inflection point IF311 which is nearest to the opticalaxis, and the sinkage value of the inflection point IF311 is denoted bySGI311. A distance perpendicular to the optical axis between theinflection point IF311 and the optical axis is HIF311 (instance). Theimage-side surface of the third lens has one inflection point IF321which is nearest to the optical axis, and the sinkage value of theinflection point IF321 is denoted by SGI321 (instance). A distanceperpendicular to the optical axis between the inflection point IF321 andthe optical axis is HIF321 (instance). The object-side surface of thethird lens has one inflection point IF312 which is the second nearest tothe optical axis, and the sinkage value of the inflection point IF312 isdenoted by SGI312 (instance). A distance perpendicular to the opticalaxis between the inflection point IF312 and the optical axis is HIF312(instance). The image-side surface of the third lens has one inflectionpoint IF322 which is the second nearest to the optical axis, and thesinkage value of the inflection point IF322 is denoted by SGI322(instance). A distance perpendicular to the optical axis between theinflection point IF322 and the optical axis is HIF322 (instance).

The lens element parameter related to an aberration:

Optical distortion for image formation in the optical image capturingsystem is denoted by ODT. TV distortion for image formation in theoptical image capturing system is denoted by TDT. Further, the range ofthe aberration offset for the view of image formation may be limited to50%-100% field. An offset of the spherical aberration is denoted by DFS.An offset of the coma aberration is denoted by DFC.

The present invention provides an optical image capturing system, inwhich the third lens is provided with an inflection point at theobject-side surface or at the image-side surface to adjust the incidentangle of each view field and modify the ODT and the TDT. In addition,the surfaces of the third lens are capable of modifying the optical pathto improve the imagining quality.

The optical image capturing system of the present invention includes afirst lens, a second lens, and a third lens in order along an opticalaxis from an object side to an image side. The first lens has positiverefractive power, and the third lens has refractive power. At least twolenses among the three lenses respectively have at least an inflectionpoint on at least one surface thereof. Both the object-side surface andthe image-side surface of the third lens are aspheric surfaces. Theoptical image capturing system satisfies:

1.2≦f/HEP≦6.0 and 0.5≦HOS/f≦1.42;

where f is a focal length of the optical image capturing system; HEP isan entrance pupil diameter of the optical image capturing system; andHOS is a distance in parallel with the optical axis between anobject-side surface, which face the object side, of the first lens andthe image plane.

The present invention further provides an optical image capturingsystem, including a first lens, a second lens, and a third lens in orderalong an optical axis from an object side to an image side. The firstlens has positive refractive power, and both the object-side surface andthe image-side surface thereof are aspheric surfaces. The second lenshas refractive power, and at least one surface thereof has at least aninflection point. The third lens has refractive power, and at least onesurface thereof has at least an inflection point, wherein both anobject-side surface and an image-side surface thereof are asphericsurfaces. The optical image capturing system satisfies:

1.2≦f/HEP≦6.0; 0.4≦|tan(HAF)|≦3.0; 0.5≦HOS/f≦1.42; |TDT|<60%; and|ODT|≦50%;

where f is a focal length of the optical image capturing system; HEP isan entrance pupil diameter of the optical image capturing system; HOS isa distance in parallel with the optical axis between an object-sidesurface, which face the object side, of the first lens and the imageplane; HAF is a half of the view angle of the optical image capturingsystem; TDT is a TV distortion; and ODT is an optical distortion.

The present invention further provides an optical image capturingsystem, including a first lens, a second lens, and a third lens in orderalong an optical axis from an object side to an image side. The firstlens has positive refractive power, and an image-side surface thereof isconvex near the optical axis; at least one surface among an object-sidesurface and the image-side surface of the first lens has at least aninflection point. The second and has negative refractive power, and atleast one surface among an object-side surface and an image-side surfacethereof has at least an inflection point. The third lens has refractivepower, wherein at least one surface among an object-side surface and animage-side surface thereof has at least an inflection point, and boththe object-side surface and the image side surface thereof are asphericsurfaces. The optical image capturing system satisfies:

1.2≦f/HEP≦3.0; 0.4≦|tan(HAF)|≦3.0; 0.5≦HOS/f≦1.42; |TDT|<60%; and|ODT|≦50%;

where f is a focal length of the optical image capturing system; HEP isan entrance pupil diameter of the optical image capturing system; HOS isa distance in parallel with the optical axis between an object-sidesurface, which face the object side, of the first lens and the imageplane; HAF is a half of the view angle of the optical image capturingsystem; TDT is a TV distortion; and ODT is an optical distortion.

In an preferred embodiment, the optical image capturing system furtherincludes an image sensor with a size less than 1/1.2″ in diagonal, and apixel less than 1.4 μm. A preferable size is 1/2.3″, and a preferablepixel size of the image sensor is less than 1.12 μm, and more preferablepixel size is less than 0.9 μm. A 16:9 image sensor is available for theoptical image capturing system of the present invention.

In an preferred embodiment, the optical image capturing system of thepresent invention is available to high-quality recording which requiresmore than 1 megapixel, and provides high quality of image.

In an preferred embodiment, a height of the optical image capturingsystem (HOS) can be reduced while |f1|>f3.

In an preferred embodiment, if the lenses satisfy |f2|>|f1|, the secondlens has weak positive refractive power or weak negative refractivepower. If the second lens has weak positive refractive power, it mayshare the positive refractive power of the first lens, and on thecontrary, if the second lens has weak negative refractive power, it mayfinely correct the aberration of the system.

In an preferred embodiment, the third lens can have positive refractivepower, and an image-side surface thereof can be concave, it may reduceback focal length and size. Besides, the third lens has at least aninflection point on at least a surface thereof, which may reduce anincident angle of the light of an off-axis field of view and correct theaberration of the off-axis field of view.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

The present invention will be best understood by referring to thefollowing detailed description of some illustrative preferredembodiments in conjunction with the accompanying drawings, in which

FIG. 1A is a schematic diagram of a first preferred embodiment of thepresent invention;

FIG. 1B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the first preferred embodimentof the present application;

FIG. 1C shows a curve diagram of TV distortion of the optical imagecapturing system of the first preferred embodiment of the presentapplication;

FIG. 2A is a schematic diagram of a second preferred embodiment of thepresent invention;

FIG. 2B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the second preferredembodiment of the present application;

FIG. 2C shows a curve diagram of TV distortion of the optical imagecapturing system of the second preferred embodiment of the presentapplication;

FIG. 3A is a schematic diagram of a third preferred embodiment of thepresent invention;

FIG. 3B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the third preferred embodimentof the present application;

FIG. 3C shows a curve diagram of TV distortion of the optical imagecapturing system of the third preferred embodiment of the presentapplication;

FIG. 4A is a schematic diagram of a fourth preferred embodiment of thepresent invention;

FIG. 4B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the fourth preferredembodiment of the present application;

FIG. 4C shows a curve diagram of TV distortion of the optical imagecapturing system of the fourth preferred embodiment of the presentapplication;

FIG. 5A is a schematic diagram of a fifth preferred embodiment of thepresent invention;

FIG. 5B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the fifth preferred embodimentof the present application;

FIG. 5C shows a curve diagram of TV distortion of the optical imagecapturing system of the fifth preferred embodiment of the presentapplication;

FIG. 6A is a schematic diagram of a sixth preferred embodiment of thepresent invention;

FIG. 6B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the sixth preferred embodimentof the present application; and

FIG. 6C shows a curve diagram of TV distortion of the optical imagecapturing system of the sixth preferred embodiment of the presentapplication.

DETAILED DESCRIPTION OF THE INVENTION

An optical image capturing system of the present invention includes afirst lens, a second lens, and a third lens from an object side to animage side. The optical image capturing system further is provided withan image sensor at an image plane.

The optical image capturing system works in three wavelengths, including486.1 nm, 587.5 nm, and 656.2 nm, wherein 587.5 mm is the main referencewavelength, and 555 nm is adopted as the main reference wavelength forextracting features.

The optical image capturing system of the present invention satisfies0.5≦ΣPPR/|ΣNPR|≦4.5, and a preferable range is 1≦ΣPPR/|ΣNPR|≦3.8, wherePPR is a ratio of the focal length f of the optical image capturingsystem to a focal length fp of each of lenses with positive refractivepower; NPR is a ratio of the focal length fn of the optical imagecapturing system to a focal length fn of each of lenses with negativerefractive power; ΣPPR is a sum of the PPRs of each positive lens, andΣNPR is a sum of the NPRs of each negative lens. It is helpful forcontrol of an entire refractive power and an entire length of theoptical image capturing system.

HOS is a height of the optical image capturing system, and when theratio of HOS/f approaches to 1, it is helpful for decrease of size andincrease of imaging quality.

In an preferred embodiment, the optical image capturing system of thepresent invention satisfies 0<ΣPP≦200 and f1/ΣPP≦0.85, and a preferablerange is 0<ΣPP≦150 and 0.01≦f1/ΣPP≦0.6, where ΣPP is a sum of a focallength fp of each lens with positive refractive power, and ΣNP is a sumof a focal length fn of each lens with negative refractive power. It ishelpful for control of focusing capacity of the system andredistribution of the positive refractive powers of the system to avoidthe significant aberration in early time. The first lens has positiverefractive power, and an object-side surface, which faces the objectside, thereof can be convex. It may modify the positive refractive powerof the first lens as well as shorten the entire length of the system.

The second lens can have negative refractive power, which may correctthe aberration of the first lens.

The third lens can have positive refractive power, and an image-sidesurface thereof, which faces the image side, can be concave. It mayshare the positive refractive power of the first lens, and shorten arear focal length to reduce the size of the system. In addition, thethird lens is provided with at least an inflection point on at least asurface to reduce an incident angle of the light of an off-axis field ofview and correct the aberration of the off-axis field of view. It ispreferable that each surface, the object-side surface and the image-sidesurface, of the third lens has at least an inflection point.

The image sensor is provided on the image plane. The optical imagecapturing system of the present invention satisfies HOS/HOI≦3 and0.5≦HOS/f≦3.0, and a preferable range is 1≦HOS/HOI≦1.63 and1≦HOS/f≦1.42, where HOI is height for image formation of the opticalimage capturing system, i.e., the maximum image height, and HOS is aheight of the optical image capturing system, i.e., a distance on theoptical axis between the object-side surface of the first lens and theimage plane. It is helpful for reduction of size of the system for usedin compact cameras.

The optical image capturing system of the present invention further isprovided with an aperture to increase image quality.

In the optical image capturing system of the present invention, theaperture could be a front aperture or a middle aperture, wherein thefront aperture is provided between the object and the first lens, andthe middle is provided between the first lens and the image plane. Thefront aperture provides a long distance between an exit pupil of thesystem and the image plane, which allows more elements to be installed.The middle could enlarge a view angle of view of the system and increasethe efficiency of the image sensor. The optical image capturing systemsatisfies 0.5≦InS/HOS≦1.1, and a preferable range is 0.6≦InS/HOS≦1,where InS is a distance between the aperture and the image plane. It ishelpful for size reduction and wide angle.

The optical image capturing system of the present invention satisfies0.45≦ΣTP/InTL≦0.95, where InTL is a distance between the object-sidesurface of the first lens and the image-side surface of the third lens,and ΣTP is a sum of central thicknesses of the lenses on the opticalaxis. It is helpful for the contrast of image and yield of manufacture,and provides a suitable back focal length for installation of otherelements.

The optical image capturing system of the present invention satisfies0.1≦|R1/R2|≦3.0, and a preferable range is 0.1≦|R1/R2|≦0.9, where R1 isa radius of curvature of the object-side surface of the first lens, andR2 is a radius of curvature of the image-side surface of the first lens.It provides the first lens with a suitable positive refractive power toreduce the increase rate of the spherical aberration.

The optical image capturing system of the present invention satisfies−200<(R5−R6)/(R5+R6)<30, where R5 is a radius of curvature of theobject-side surface of the third lens, and R6 is a radius of curvatureof the image-side surface of the third lens. It may modify theastigmatic field curvature.

The optical image capturing system of the present invention satisfies0<IN12/f≦0.30, and a preferable range is 0.01≦IN12/f≦0.20, where IN12 isa distance on the optical axis between the first lens and the secondlens. It may correct chromatic aberration and improve the performance.

The optical image capturing system of the present invention satisfies1≦(TP1+IN12)/TP2≦10, where TP1 is a central thickness of the first lenson the optical axis, and TP2 is a central thickness of the second lenson the optical axis. It may control the sensitivity of manufacture ofthe system and improve the performance.

The optical image capturing system of the present invention satisfies0.2≦(TP3+IN23)/TP2≦10, where TP3 is a central thickness of the thirdlens on the optical axis, and IN23 is a distance between the second lensand the third lens. It may control the sensitivity of manufacture of thesystem and improve the performance.

The optical image capturing system of the present invention satisfies0.1≦TP2/ΣTP≦0.9, and a preferable range is 0.1≦TP2/ΣTP≦0.3, where TP2 isa central thickness of the second lens on the optical axis, and ΣTP is asum of the central thicknesses of all the lenses on the optical axis. Itmay finely correct the aberration of the incident rays and reduce theheight of the system.

The optical image capturing system of the present invention satisfies −1mm≦InRS31≦1 mm; −1 mm≦InRS32≦1 mm; 1 mm<|InRS31|+|InRS32|≦2 mm;0.01≦|InRS31|/TP3≦10; and 0.01≦|InRS32|/TP3≦10, where InRS31 is adisplacement in parallel with the optical axis from a point on theobject-side surface of the third lens, through which the optical axispasses, to a point at the maximum effective semi diameter of theobject-side surface of the third lens, wherein InRS31 is positive whilethe displacement is toward the image side, and InRS31 is negative whilethe displacement is toward the object side; InRS32 is a displacement inparallel with the optical axis from a point on the image-side surface ofthe third lens, through which the optical axis passes, to a point at themaximum effective semi diameter of the image-side surface of the thirdlens; and TP3 is a central thickness of the third lens on the opticalaxis. It may control the positions of the maximum effective semidiameter on both surfaces of the third lens, correct the aberration ofthe peripheral field of view, and reduce the size.

The optical image capturing system of the present invention satisfies0<SGI311/(SGI311+TP3)≦0.9 and 0<SGI521/(SGI321+TP3)≦0.9, and apreferable range is 0.01<SGI311/(SGI311+TP3)≦0.7 and0.01<SGI321/(SGI321+TP3)≦0.7, where SGI311 is a displacement in parallelwith the optical axis from a point on the object-side surface of thethird lens, through which the optical axis passes, to an inflectionpoint, which is the closest to the optical axis, on the object-sidesurface of the third lens; SGI321 is a displacement in parallel with theoptical axis from a point on the image-side surface of the third lens,through which the optical axis passes, to an inflection point, which isthe closest to the optical axis, on the image-side surface of the thirdlens, and TP3 is a thickness of the third lens on the optical axis.

The optical image capturing system of the present invention satisfies0<SGI312/(SGI312+TP3)≦0.9 and 0<SGI322/(SGI322+TP3)≦0.9, and apreferable range is 0.1≦SGI312/(SGI312+TP3)≦0.8 and0.1≦SGI322/(SGI322+TP3)≦0.8, where SGI312 is a displacement in parallelwith the optical axis from a point on the object-side surface of thethird lens, through which the optical axis passes, to an inflectionpoint, which is the second closest to the optical axis, on theimage-side surface of the third lens, and SGI322 is a displacement inparallel with the optical axis from a point on the object-side surfaceof the third lens, through which the optical axis passes, to aninflection point, which is the second closest to the optical axis, onthe image-side surface of the third lens.

The optical image capturing system of the present invention satisfies0.01≦′HIF311/HOI≦0.9 and 0.01≦HIF321/HOI≦0.9, and a preferable range is0.09≦HIF311/HOI≦0.5 and 0.09≦HIF321/HOI≦0.5, where HIF311 is a distanceperpendicular to the optical axis between the inflection point, which isthe closest to the optical axis, on the object-side surface of the thirdlens and the optical axis, and HIF321 is a distance perpendicular to theoptical axis between the inflection point, which is the closest to theoptical axis, on the image-side surface of the third lens and theoptical axis.

The optical image capturing system of the present invention satisfies0.01≦HIF312/HOI≦0.9 and 0.01≦HIF322/HOI≦0.9, and a preferable range is0.09≦HIF312/HOI≦0.8 and 0.09≦HIF322/HOI≦0.8, where HIF312 is a distanceperpendicular to the optical axis between the inflection point, which isthe second the closest to the optical axis, on the object-side surfaceof the third lens and the optical axis, and HIF322 is a distanceperpendicular to the optical axis between the inflection point, which isthe second the closest to the optical axis, on the image-side surface ofthe third lens and the optical axis.

In an preferred embodiment, the lenses of high Abbe number and thelenses of low Abbe number are arranged in an interlaced arrangement thatcould be helpful for correction of aberration of the system.

An equation of aspheric surface is

z=ch ²/[1+[1(k+1)c ² h ²]^(0.5) ]+A4h ⁴ +A6h ⁶ +A8h ⁸ +A10h ¹⁰ +A12h ¹²+A14h ¹⁴ +A16 h ¹⁶ +A18h ¹⁸ +A20h ²⁰+ . . .  (1)

where z is a depression of the aspheric surface; k is conic constant; cis reciprocal of radius of curvature; and A4, A6, A8, A10, A12, A14,A16, A18, and A20 are high-order aspheric coefficients.

In the optical image capturing system, the lenses could be made ofplastic or glass. The plastic lenses may reduce the weight and lower thecost of the system, and the glass lenses may control the thermal effectand enlarge the space for arrangement of refractive power of the system.In addition, the opposite surfaces (object-side surface and image-sidesurface) of the first to the third lenses could be aspheric that canobtain more control parameters to reduce aberration. The number ofaspheric glass lenses could be less than the conventional sphericalglass lenses that is helpful for reduction of the height of the system.

When the lens has a convex surface, which means that the surface isconvex around a position, through which the optical axis passes, andwhen the lens has a concave surface, which means that the surface isconcave around a position, through which the optical axis passes.

The optical image capturing system of the present invention further isprovided with a diaphragm to increase image quality.

In the optical image capturing system, the diaphragm could be a frontdiaphragm or a middle diaphragm, wherein the front diaphragm is providedbetween the object and the first lens, and the middle is providedbetween the first lens and the image plane. The front diaphragm providesa long distance between an exit pupil of the system and the image plane,which allows more elements to be installed. The middle diaphragm couldenlarge a view angle of view of the system and increase the efficiencyof the image sensor. The middle diaphragm is helpful for size reductionand wide angle.

The optical image capturing system of the present invention could beapplied in dynamic focusing optical system. It is superior in correctionof aberration and high imaging quality so that it could be allied inlots of fields.

We provide several preferred embodiments in conjunction with theaccompanying drawings for the best understanding, which are:

First Preferred Embodiment

As shown in FIG. 1A and FIG. 1B, an optical image capturing system 100of the first preferred embodiment of the present invention includes,along an optical axis from an object side to an image side, a first lens110, an aperture 100, a second lens 120, a third lens 130, an infraredrays filter 170, an image plane 180, and an image sensor 190.

The first lens 110 has positive refractive power, and is made ofplastic. An object-side surface 112 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 114thereof, which faces the image side, is a concave aspheric surface.

The second lens 120 has negative refractive power, and is made ofplastic. An object-side surface 122 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 124thereof, which faces the image side, is a convex aspheric surface, andthe image-side surface 124 has an inflection point. The second lens 120satisfies SGI221=−0.1526 mm and |SGI221|/(|SGI221|+TP2)=0.2292, whereSGI221 is a displacement in parallel with the optical axis from a pointon the image-side surface of the second lens, through which the opticalaxis passes, to the inflection point on the image-side surface, which isthe closest to the optical axis.

The second lens further satisfies HIF221=0.5606 mm andHIF221/HOI=0.3128, where HIF221 is a displacement perpendicular to theoptical axis from a point on the image-side surface of the second lens,through which the optical axis passes, to the inflection point, which isthe closest to the optical axis.

The third lens 130 has positive refractive power, and is made ofplastic. An object-side surface 132, which faces the object side, is aconvex aspheric surface, and an image-side surface 134, which faces theimage side, is a concave aspheric surface. The object-side surface 132has two inflection points, and the image-side surface 134 has aninflection point. The third lens 130 satisfies SGI311=−0.0180 mm;SGI321=−0.0331 mm and |SGI311|/(|SGI311|+TP3)=0.0339 and|SGI321|/(|SGI321|+TP3)=0.0605, where SGI311 is a displacement inparallel with the optical axis, from a point on the object-side surfaceof the third lens, through which the optical axis passes, to theinflection point on the object-side surface, which is the closest to theoptical axis, and SGI321 is a displacement in parallel with the opticalaxis, from a point on the image-side surface of the third lens, throughwhich the optical axis passes, to the inflection point on the image-sidesurface, which is the closest to the optical axis.

The third lens 130 satisfies SGI312=−0.0367 mm;|SGI312|/(|SGI312|+TP3)=0668, where SGI312 is a displacement in parallelwith the optical axis, from a point on the object-side surface of thethird lens, through which the optical axis passes, to the inflectionpoint on the object-side surface, which is the second closest to theoptical axis.

The third lens 130 further satisfies HIF311=0.2298 mm; HIF321=0.3393 mm;HIF311/HOI=0.1282; and HIF321/HOI=0.1893, where HIF311 is a distanceperpendicular to the optical axis between the inflection point on theobject-side surface of the third lens, which is the closest to theoptical axis, and the optical axis, and HIF321 is a distanceperpendicular to the optical axis between the inflection point on theimage-side surface of the third lens, which is the closest to theoptical axis, and the optical axis.

The third lens 130 further satisfies HIF312=0.8186 mm;HIF312/HOI=0.4568, where HIF312 is a distance perpendicular to theoptical axis between the inflection point on the object-side surface ofthe third lens, which is the second the closest to the optical axis, andthe optical axis.

The infrared rays filter 170 is made of glass, and between the thirdlens 130 and the image plane 180. The infrared rays filter 170 gives nocontribution to the focal length of the system.

The optical image capturing system of the first preferred embodiment hasthe following parameters, which are f=2.42952 mm; f/HEP=2.02; andHAF=35.87 degrees and tan(HAF)=0.7231, where f is a focal length of thesystem; HAF is a half of the maximum field angle; and HEP is an entrancepupil diameter.

The parameters of the lenses of the first preferred embodiment aref1=2.27233 mm; |f/f|1=1.0692; f3=7.0647 mm; |f1|<f3; and |f1/f3|=0.3216,where f1 is a focal length of the first lens 110; and f3 is a focallength of the third lens 130.

The first preferred embodiment further satisfies f2=−5.2251 mm; and|f2|>|f1|, where f2 is a focal length of the second lens 120, and f3 isa focal length of the third lens 130.

The optical image capturing system of the first preferred embodimentfurther satisfies ΣPPR=f/f1+f/f3=1.4131; ΣNPR=f/f2=0.4650;ΣPPR/|ΣNPR|=3.0391; |f/f3|=0.3439; |f|/f21=0.4349; |f2/f3|=0.7396, wherePPR is a ratio of a focal length f of the optical image capturing systemto a focal length fp of each of the lenses with positive refractivepower; and NPR is a ratio of a focal length fn of the optical imagecapturing system to a focal length fn of each of lenses with negativerefractive power.

The optical image capturing system of the first preferred embodimentfurther satisfies InTL+InB=HOS; HOS=2.9110 mm; HOI=1.792 mm;HOS/HOI=1.6244; HOS/f=1.1982; InTL/HOS=0.7008; InS=2.25447 mm; andInS/HOS=0.7745, where InTL is a distance between the object-side surface112 of the first lens 110 and the image-side surface 134 of the thirdlens 130; HOS is a height of the image capturing system, i.e., adistance between the object-side surface 112 of the first lens 110 andthe image plane 180; InS is a distance between the aperture 100 and theimage plane 180; HOI is height for image formation of the optical imagecapturing system, i.e., the maximum image height; and InB is a distancebetween the image-side surface 134 of the third lens 130 and the imageplane 180.

The optical image capturing system of the first preferred embodimentfurther satisfies ΣTP=1.4198 mm and ΣTP/InTL=0.6959, where ΣTP is a sumof the thicknesses of the lenses 110-130 with refractive power. It ishelpful for the contrast of image and yield of manufacture, and providesa suitable back focal length for installation of other elements.

The optical image capturing system of the first preferred embodimentfurther satisfies |R1/R2|=0.3849, where R1 is a radius of curvature ofthe object-side surface 112 of the first lens 110, and R2 is a radius ofcurvature of the image-side surface 114 of the first lens 110. Itprovides the first lens with a suitable positive refractive power toreduce the increase rate of the spherical aberration.

The optical image capturing system of the first preferred embodimentfurther satisfies (R5−R6)/(R5+R6)=−0.0899, where R5 is a radius ofcurvature of the object-side surface 132 of the third lens 130, and R6is a radius of curvature of the image-side surface 134 of the third lens130. It may modify the astigmatic field curvature.

The optical image capturing system of the first preferred embodimentfurther satisfies ΣPP=f1+f3=9.3370 mm and f1/(f1+f3)=0.2434, where ΣPPis a sum of the focal lengths fp of each lens with positive refractivepower. It is helpful to share the positive refractive power of the firstlens 110 to the other positive lens to avoid the significant aberrationcaused by the incident rays.

The optical image capturing system of the first preferred embodimentfurther satisfies ΣNP=f2=−5.2251 mm, where f2 is a focal length of thesecond lens 120, and ΣNP is a sum of the focal lengths fn of each lenswith negative refractive power. It is helpful to avoid the significantaberration caused by the incident rays.

The optical image capturing system of the first preferred embodimentfurther satisfies IN12=0.4068 mm and IN12/f=0.1674, where IN12 is adistance on the optical axis between the first lens 110 and the secondlens 120. It may correct chromatic aberration and improve theperformance.

The optical image capturing system of the first preferred embodimentfurther satisfies TP1=0.5132 mm; TP2=0.3363 mm; and(TP1+IN12)/TP2=2.7359, where TP1 is a central thickness of the firstlens 110 on the optical axis, and TP2 is a central thickness of thesecond lens 120 on the optical axis. It may control the sensitivity ofmanufacture of the system and improve the performance.

The optical image capturing system of the first preferred embodimentfurther satisfies (TP3+IN23)/TP2=2.3308, where IN23 is a distance on theoptical axis between the second lens 120 and the third lens 130. It maycontrol the sensitivity of manufacture of the system and improve theperformance.

The optical image capturing system of the first preferred embodimentfurther satisfies TP2/ΣTP=0.2369, where TP2 is a thickness on theoptical axis of the second lens 120, and ΣTP is a sum of the centralthicknesses of all the lenses with refractive power on the optical axis.It may finely correct the aberration of the incident rays and reduce theheight of the system.

The optical image capturing system of the first preferred embodimentfurther satisfies InRS31=−0.1097 mm; InRS32=−0.3195 mm;|InRS31|+|InRS32|=0.42922 mm; |InRS31|/TP3=0.1923; and|InRS32|/TP3=0.5603, where InRS31 is a displacement in parallel with theoptical axis from a point on the object-side surface 132 of the thirdlens, through which the optical axis passes, to a point at the maximumeffective semi diameter of the object-side surface 132 of the third lens130; InRS32 is a displacement in parallel with the optical axis from apoint on the image-side surface 134 of the third lens, through which theoptical axis passes, to a point at the maximum effective semi diameterof the image-side surface 134 of the third lens 130; and TP3 is acentral thickness of the third lens 130 on the optical axis. It ishelpful for manufacturing and shaping of the lenses, and is helpful toreduce the size.

The optical image capturing system of the first preferred embodimentfurther satisfies HVT31=0.4455 mm; HVT32=0.6479 mm; andHVT31/HVT32=0.6876, wherein a distance perpendicular to the optical axisbetween a critical point C31 on the object-side surface 132 of the thirdlens 130 and the optical axis is HVT31; a distance perpendicular to theoptical axis between a critical point C32 on the image-side surface 134of the third lens 130 and the optical axis is HVT32. It is helpful tocorrect the aberration of the off-axis field of view.

The optical image capturing system of the first preferred embodimentfurther satisfies HVT32/HOI=0.3616. It is helpful to correct theaberration of the peripheral field of view.

The optical image capturing system of the first preferred embodimentfurther satisfies HVT32/HOS=0.2226. It is helpful to correct theaberration of the peripheral field of view.

The second lens 120 and the third lens 130 of the optical imagecapturing system of the first preferred embodiment have negativerefractive power, and the optical image capturing system furthersatisfies |NA1−NA2|=33.5951; and NA3/NA2=2.4969, where NA1 is an Abbenumber of the first lens 110, NA2 is an Abbe number of the second lens120, and NA3 is an Abbe number of the third lens 130. It may correct theaberration of the system.

The optical image capturing system of the first preferred embodimentfurther satisfies |TDT|=1.2939% and |ODT|=1.4381%, where TDT is TVdistortion; and ODT is optical distortion.

The parameters of the lenses of the first preferred embodiment arelisted in Table 1 and Table 2.

TABLE 1 f = 2.42952 mm; f/HEP = 2.02; HAF = 35.87 deg; tan(HAF) = 0.7231Focal Radius of curvature Thickness Refractive length Surface (mm) (mm)Material index Abbe number (mm) 0 Object plane 600 1 1^(st) lens 0.8490.513 plastic 1.535 56.070 2.273 2 2.205 0.143 3 Aperture plane 0.263 42^(nd) lens −1.208 0.336 plastic 1.643 22.470 −5.225 5 −2.085 0.214 63^(rd) lens 1.178 0.570 plastic 1.544 56.090 7.012 7 1.411 0.114 8Filter plane 0.210 BK7_(—) SCHOTT 9 plane 0.550 10 Image plane 0.000plane Reference wavelength: 555 nm; the clear aperture of the firstsurface is 0.640 mm.

TABLE 2 Coefficients of the aspheric surfaces Surface 1 2 4 5 6 7 k =1.22106E−01 1.45448E+01 8.53809E−01 4.48992E−01 −1.44104E+01−3.61090E+00 A4 = −6.43320E−04  −9.87186E−02  −7.81909E−01 −1.69310E+00  −7.90920E−01 −5.19895E−01 A6 = −2.58026E−02  2.63247E+00−8.49939E−01  5.85139E+00  4.98290E−01  4.24519E−01 A8 = 1.00186E+00−5.88099E+01  3.03407E+01 −1.67037E+01   2.93540E−01 −3.12444E−01 A10 =−4.23805E+00  5.75648E+02 −3.11976E+02  2.77661E+01 −3.15288E−01 1.42703E−01 A12 = 9.91922E+00 −3.00096E+03  1.45641E+03 −5.46620E+00 −9.66930E−02 −2.76209E−02 A14 = −1.17917E+01  7.91934E+03 −2.89774E+03 −2.59816E+01   1.67006E−01 −3.11872E−03 A16 = 8.87410E+00 −8.51578E+03 1.35594E+03 1.43091E+01 −4.43712E−02  1.34499E−03 A18 = 0.00000E+000.00000E+00 0.00000E+00 0.00000E+00  0.00000E+00  0.00000E+00 A20 =0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00  0.00000E+00 0.00000E+00

The detail parameters of the first preferred embodiment are listed inTable 1, in which the unit of radius of curvature, thickness, and focallength are millimeter, and surface 0-10 indicates the surfaces of allelements in the system in sequence from the object side to the imageside. Table 2 is the list of coefficients of the aspheric surfaces, inwhich A1-A20 indicate the coefficients of aspheric surfaces from thefirst order to the twentieth order of each aspheric surface. Thefollowing preferred embodiments have the similar diagrams and tables,which are the same as those of the first preferred embodiment, so we donot describe it again.

Second Preferred Embodiment

As shown in FIG. 2A and FIG. 2B, an optical image capturing system ofthe second preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, a first lens 210,an aperture 200, a second lens 220, a third lens 230, an infrared raysfilter 270, an image plane 280, and an image sensor 290. HOI is a halfof a diagonal of an effective sensing area of an image sensor 290, andis 2.856 mm.

The first lens 210 has positive refractive power, and is made ofplastic. An object-side surface 212 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 214thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 212 has an inflection point thereon.

The second lens 220 has negative refractive power, and is made ofplastic. An object-side surface 222 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 224thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 222 has two inflection points thereon, and theimage-side surface 224 has an inflection point thereon.

The third lens 230 has positive refractive power, and is made ofplastic. An object-side surface 232, which faces the object side, is aconvex aspheric surface, and an image-side surface 234, which faces theimage side, is a concave aspheric surface. The object-side surface 232and the image-side surface both have an inflection point thereon.

The infrared rays filter 270 is made of glass, and between the thirdlens 230 and the image plane 280. The infrared rays filter 270 gives nocontribution to the focal length of the system.

The optical image capturing system of the second preferred embodimenthas the following parameters, which are |f2|=4.729 mm; |f1|=2.394 mm;and |f2|>|f1|, where f1 is a focal length of the first lens 210; f2 is afocal length of the second lens 220.

The optical image capturing system of the second preferred embodimentfurther satisfies TP2=0.297 mm and TP3=1.257 mm, where TP2 is athickness of the second lens 220 on the optical axis, and TP3 is athickness of the third lens 230 on the optical axis.

In the second preferred embodiment, the first and the third lenses 210,230 are positive lenses, and their focal lengths are f1 and f3respectively. The optical image capturing system of the second preferredembodiment further satisfies ΣPP=f1+f3=11.9264 mm and f1/(f1+f3)=0.2007,where ΣPP is a sum of the focal lengths of each positive lens. It ishelpful to share the positive refractive power of the first lens 210 tothe other positive lens to avoid the significant aberration caused bythe incident rays.

The optical image capturing system of the second preferred embodimentfurther satisfies ΣNP=f2, where f2 is the focal length of the secondlens 220, and ΣNP is a sum of the focal lengths of each negative lens.

The parameters of the lenses of the second preferred embodiment arelisted in Table 3 and Table 4.

TABLE 3 f = 3.060 mm; f/HEP = 2.2; HAF = 42.883 deg; tan(HAF) = 0.9271Focal Radius of curvature Thickness Refractive length Surface (mm) (mm)Material index Abbe number (mm) 0 Object plane 6000 1 Aperture plane−0.02396 2 1st lens 2.23403 0.98457 plastic 1.544 56.09 2.394 3 −2.657900.43781 4 2nd lens −0.57435 0.29670 plastic 1.642 22.46 −4.729 5−0.85047 0.03148 6 3rd lens 2.23040 1.25686 plastic 1.544 56.09 9.533 73.12460 0.16422 8 Filter plane 0.27699 BK7 1.517 64.13 SCHOTT 9 plane0.85611 10 Image plane plane Reference wavelength: 555 nm. The clearaperture of the fifth surface is 1.051 mm

TABLE 4 Coefficients of the aspheric surfaces Surface 2 3 4 5 6 7 k = 9.100856E−01 −4.963694E+01 −3.251183E+00 −2.830111E+00 −6.199993E+01−4.519939E+00 A4 = −9.025521E−02 −5.203468E−01 −9.385326E−01−4.657463E−01 −5.234788E−02 −9.924235E−02 A6 =  2.015539E−01 1.159073E+00  2.558601E+00  1.786277E+00  1.969399E−01  7.795285E−02 A8= −1.311326E+00 −3.877250E+00 −1.794309E+00 −3.232440E+00 −7.485186E−01−5.488800E−02 A10 =  2.820832E+00  8.947129E+00 −1.603598E+00 5.605032E+00  1.393712E+00  2.475031E−02 A12 = −3.539744E−01−1.162091E+01  5.021183E+00 −6.663977E+00 −1.557073E+00 −6.945410E−03A14 = −1.143912E+01  7.702905E+00 −6.153688E+00  4.485671E+00 1.062120E+00  1.122065E−03 A16 =  2.249583E+01 −2.059587E+00 4.351836E+00 −1.541404E+00 −4.212744E−01 −9.302509E−05 A18 =−1.656673E+01  5.642133E−03 −1.573268E+00  2.361306E−01  8.441692E−02 3.673143E−06 A20 =  3.428072E+00 −1.939653E−03  1.943572E−01−2.052556E−02 −5.712383E−03 −1.768515E−07

An equation of the aspheric surfaces of the second preferred embodimentis the same as that of the first preferred embodiment, and thedefinitions are the same as well.

The exact parameters of the second preferred embodiment (with 555 nm asthe main reference wavelength) based on Table 3 and Table 4 are listedin the following table:

Second preferred embodiment (Reference wavelength: 555 nm) InRS31 InRS32HVT31 HVT32 |ODT|% |TDT|% −0.02191 −0.28357 0.84706 1.24594 1.526851.18157 |f/f1| |f/f2| |f/f3| |f1/f3| |f1/f2| |f2/f3| 1.27834 0.647110.32100 3.98233 1.97547 2.01589 ΣPPR/ ΣPPR ΣNPR |ΣNPR| ΣPP ΣNP f1/ΣPP1.59934 0.64711 2.47153 11.92635 −4.72875 0.20071 InTL HOS HOS/HOIInS/HOS InTL/HOS ΣTP/InTL 4.30474 3.00741 1.50726 0.99443 0.698630.84396 HVT32/ HVT32/ |InRS31|/TP3 |InRS32|/TP3 HOI HOS 0.0174 0.22560.4363 0.2894 (TP1 + IN12)/ (TP3 + IN23)/ IN12/f TP2 TP2 TP2/ΣTP 0.143074.34223 4.34223 0.11690

The exact parameters related to inflection points of the secondpreferred embodiment (with main reference wavelength as 555 nm) based onTable 3 and Table 4 are listed in the following table:

Values related to the inflection points of the second preferredembodiment (Reference wavelength: 555 nm) HIF111 0.5738 HIF111/HOI0.2009 SGI111 0.0662 |SGI111|/(|SGI111| + TP1) 0.0630 HIF211 0.5129HIF211/HOI 0.1796 SGI211 −0.1992 |SGI211|/(|SGI211| + TP2) 0.4017 HIF2120.5690 HIF212/HOI 0.1992 SGI212 −0.1911 |SGI212|/(|SGI212| + TP2) 0.3918HIF221 0.5203 HIF221/HOI 0.1822 SGI221 −0.1486 |SGI221|/(|SGI221| + TP2)0.3337 HIF311 0.4371 HIF311/HOI 0.1530 SGI311 0.0290|SGI311|/(|SGI311| + TP3) 0.0226 HIF321 0.6516 HIF321/HOI 0.2282 SGI3210.0521 |SGI321|/(|SGI321| + TP3) 0.0398

Third Preferred Embodiment

As shown in FIG. 3A and FIG. 3B, an optical image capturing system ofthe third preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, a first lens 310,an aperture 300, a second lens 320, a third lens 330, an infrared raysfilter 370, an image plane 380, and an image sensor 390. HOI is a halfof a diagonal of an effective sensing area of an image sensor 390, andis 2.268 mm.

The first lens 310 has positive refractive power, and is made ofplastic. An object-side surface 312 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 314thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 312 has two inflection points thereon.

The second lens 320 has negative refractive power, and is made ofplastic. An object-side surface 322 thereof, which faces the objectside, is a concave aspheric surface; while an image-side surface 324thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 322 and the image-side surface 324 both have aninflection point thereon.

The third lens 330 has positive refractive power, and is made ofplastic. An object-side surface 332, which faces the object side, is aconvex aspheric surface, and an image-side surface 334, which faces theimage side, is a concave aspheric surface. The object-side surface 332and the image-side surface 334 both have an inflection point thereon.

The infrared rays filter 370 is made of glass, and between the thirdlens 330 and the image plane 380. The infrared rays filter 370 gives nocontribution to the focal length of the system.

The parameters of the lenses of the third preferred embodiment are|f2|=3.756 mm, |f1|=1.901 mm, and |f2|>|f1|, where f1 is a focal lengthof the first lens 310; f2 is a focal length of the second lens 320.

The optical image capturing system of the third preferred embodimentfurther satisfies TP2=0.236 mm and TP3=0.998 mm, where TP2 is athickness of the second lens 320 on the optical axis, and TP3 is athickness of the third lens 330 on the optical axis.

In the third preferred embodiment, the first and the third lenses 310,330 are positive lenses, and their focal lengths are f1 and f3respectively. The optical image capturing system of the third preferredembodiment further satisfies ΣPP=f1+f3=9.4725 mm and f1/(f1+f3)=0.2007,where ΣPP is a sum of the focal lengths of each positive lens. It ishelpful to share the positive refractive power of the first lens 310 tothe other positive lens to avoid the significant aberration caused bythe incident rays.

The optical image capturing system of the third preferred embodimentfurther satisfies ΣNP=f2, where ΣNP is a sum of the focal lengths ofeach negative lens.

The parameters of the lenses of the third preferred embodiment arelisted in Table 5 and Table 6.

TABLE 5 f = 2.430 mm; f/HEP = 2.2; HAF = 42.879 deg; tan(HAF) = 0.9286Focal Radius of curvature Thickness Refractive length Surface (mm) (mm)Material index Abbe number (mm) 0 Object plane 3000 1 Aperture plane−0.01903 2 1st lens 1.77438 0.78199 plastic 1.544 56.09 1.901 3 −2.111030.34773 4 2nd lens −0.45618 0.23565 plastic 1.642 22.46 −3.756 5−0.67549 0.02500 6 3rd lens 1.77149 0.99826 plastic 1.544 56.09 7.571 72.48171 0.13043 8 Filter plane 0.22000 BK7 1.517 64.13 SCHOTT 9 plane0.67996 10 Image plane plane Reference wavelength: 555 nm. The clearaperture of the fifth surface is 0.835 mm

TABLE 6 Coefficients of the aspheric surfaces Surface 2 3 4 5 6 7 k = 9.100856E−01 −4.963694E+01 −3.251183E+00 −2.830111E+00 −6.199993E+01−4.519939E+00 A4 = −1.801374E−01 −1.038543E+00 −1.873186E+00−9.295677E−01 −1.044794E−01 −1.980745E−01 A6 =  6.376915E−01 3.667163E+00  8.095096E+00  5.651559E+00  6.230933E−01  2.466331E−01 A8= −6.576845E+00 −1.944603E+01 −8.999210E+00 −1.621204E+01 −3.754133E+00−2.752862E−01 A10 =  2.242705E+01  7.113422E+01 −1.274942E+01 4.456285E+01  1.108071E+01  1.967775E−01 A12 = −4.461228E+00−1.464612E+02  6.328323E+01 −8.398777E+01 −1.962419E+01 −8.753474E−02A14 = −2.285404E+02  1.538951E+02 −1.229436E+02  8.961851E+01 2.121992E+01  2.241757E−02 A16 =  7.124592E+02 −6.522862E+01 1.378258E+02 −4.881738E+01 −1.334207E+01 −2.946172E−03 A18 =−8.317305E+02  2.832625E−01 −7.898571E+01  1.185490E+01  4.238140E+00 1.844096E−04 A20 =  2.728246E+02 −1.543681E−01  1.546800E+01−1.633535E+00 −4.546224E−01 −1.407480E−05

An equation of the aspheric surfaces of the third preferred embodimentis the same as that of the first preferred embodiment, and thedefinitions are the same as well.

The exact parameters of the third preferred embodiment (with 555 nm asthe main reference wavelength) based on Table 5 and Table 6 are listedin the following table:

Third preferred embodiment (Reference wavelength: 555 nm) InRS31 InRS32HVT31 HVT32 |ODT|% |TDT|% −0.01737 −0.22493 0.67278 0.98956 1.526841.18149 |f/f1| |f/f2| |f/f3| |f1/f3| |f1/f2| |f2/f3| 1.27834 0.647110.32100 3.98234 1.97548 2.01589 ΣPPR/ ΣPPR ΣNPR |ΣNPR| ΣPP ΣNP f1/ΣPP1.59935 0.64711 2.47154 9.47248 −3.75580 0.20071 InTL HOS HOS/HOIInS/HOS InTL/HOS ΣTP/InTL 3.41903 2.38863 1.50751 0.99443 0.698630.84396 HVT32/ HVT32/ |InRS31|/TP3 |InRS32|/TP3 HOI HOS 0.0174 0.22530.4363 0.2894 (TP1 + IN12)/ (TP3 + IN23)/ IN12/f TP2 TP2 TP2/ΣTP 0.143074.34223 4.34223 0.11690

The exact parameters related to inflection points of the third preferredembodiment (with main reference wavelength as 555 nm) based on Table 5and Table 6 are listed in the following table:

Values related to the inflection points of the third preferredembodiment (Reference wavelength: 555 nm) HIF111 0.4557 HIF111/HOI0.2009 SGI111 0.0526 |SGI111|/(|SGI111| + TP1) 0.0630 HIF112 0.4812HIF112/HOI 0.2122 SGI112 0.0566 |SGI112|/(|SGI112| + TP1) 0.0675 HIF2110.4073 HIF211/HOI 0.1796 SGI211 −0.1582 |SGI211|/(|SGI211| + TP2) 0.4016HIF221 0.4133 HIF221/HOI 0.1822 SGI221 −0.1180 |SGI221|/(|SGI221| + TP2)0.3337 HIF311 0.3472 HIF311/HOI 0.1531 SGI311 0.0231|SGI311|/(|SGI311| + TP3) 0.0226 HIF321 0.5176 HIF321/HOI 0.2282 SGI3210.0414 |SGI321|/(|SGI321| + TP3) 0.0398

Fourth Preferred Embodiment

As shown in FIG. 4A and FIG. 4B, an optical image capturing system ofthe fourth preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, a first lens 410,an aperture 400, a second lens 420, a third lens 430, an infrared raysfilter 470, an image plane 480, and an image sensor 490. HOI is a halfof a diagonal of an effective sensing area of an image sensor 490, andis 1.814 mm.

The first lens 410 has positive refractive power, and is made ofplastic. An object-side surface 412 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 414thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 412 has an inflection point thereon.

The second lens 420 has negative refractive power, and is made ofplastic. An object-side surface 422 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 424thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 422 and the image-side surface 424 both have aninflection point thereon.

The third lens 430 has positive refractive power, and is made ofplastic. An object-side surface 432, which faces the object side, is aconvex aspheric surface, and an image-side surface 434, which faces theimage side, is a concave aspheric surface. The object-side surface 432and the image-side surface 434 both have one inflection point thereon.

The infrared rays filter 470 is made of glass, and between the thirdlens 430 and the image plane 480. The infrared rays filter 470 gives nocontribution to the focal length of the system.

The optical image capturing system of the fourth preferred embodimenthas the following parameters, which are |f2|=2.864 mm; |f1|=1.505 mm;and |f2|>|f1|, where f1 is a focal length of the first lens 410; f2 is afocal length of the second lens 420.

The optical image capturing system of the fourth preferred embodimentfurther satisfies TP2=0.191 mm and TP3=0.792 mm, where TP2 is athickness of the second lens 420 on the optical axis, and TP3 is athickness of the third lens 430 on the optical axis.

In the fourth preferred embodiment, the first and the third lenses 410,430 are positive lenses, and their focal lengths are f1 and f3respectively. The optical image capturing system of the fourth preferredembodiment further satisfies ΣPP=f1+f3=7.3202 mm and f1/(f1+f3)=0.2056,where ΣPP is a sum of the focal lengths of each positive lens. It ishelpful to share the positive refractive power of the first lens 410 tothe other positive lens to avoid the significant aberration caused bythe incident rays.

The optical image capturing system of the fourth preferred embodimentfurther satisfies ΣNP=f2, where f2 is a focal length of the second lens420, and ΣNP is a sum of the focal lengths of each negative lens.

The parameters of the lenses of the fourth preferred embodiment arelisted in Table 7 and Table 8.

TABLE 7 f = 1.944 mm; f/HEP = 2.2; HAF = 42.963 deg; tan(HAF) = 0.9313Focal Radius of curvature Thickness Refractive length Surface (mm) (mm)Material index Abbe number (mm) 0 Object plane 2399.6 1 Aperture plane−0.02172 2 1st lens 1.41100 0.64560 plastic 1.544 56.09 1.505 3 −1.649780.26887 4 2nd lens −0.36295 0.19067 plastic 1.642 22.46 −2.864 5−0.54441 0.02000 6 3rd lens 1.37712 0.79205 plastic 1.544 56.09 5.815 71.93843 0.10424 8 Filter plane 0.17597 BK7 1.517 64.13 SCHOTT 9 plane0.54389 10 Image plane plane Reference wavelength: 555 nm. The clearaperture of the fifth surface is 0.668 mm

TABLE 8 Coefficients of the aspheric surfaces Surface 2 3 4 5 6 7 k =−1.110676E−01 −4.913818E+01 −3.233806E+00 −2.778199E+00 −5.922462E+01−5.226612E+00 A4 = −2.764018E−01 −2.098059E+00 −3.592490E+00−1.730798E+00 −2.101008E−01 −3.899924E−01 A6 =  1.655587E+00 1.216481E+01  2.454375E+01  1.653273E+01  1.472199E+00  7.525561E−01 A8= −2.881177E+01 −1.004569E+02 −4.383268E+01 −7.238981E+01 −1.414633E+01−1.273214E+00 A10 =  1.772338E+02  5.751315E+02 −9.158487E+01 3.081984E+02  6.738621E+01  1.386173E+00 A12 = −2.727327E+02−1.861729E+03  7.369234E+02 −9.169796E+02 −1.960705E+02 −9.531050E−01A14 = −3.097501E+03  3.084805E+03 −2.249369E+03  1.555735E+03 3.506094E+02  3.830070E−01 A16 =  1.859780E+04 −2.061909E+03 3.934874E+03 −1.352941E+03 −3.640651E+02 −8.048162E−02 A18 =−3.703737E+04  1.261382E+01 −3.517272E+03  5.279047E+02  1.887264E+02 8.211851E−03 A20 =  1.898894E+04 −1.074422E+01  1.076593E+03−1.136961E+02 −3.164230E+01 −9.796242E−04

An equation of the aspheric surfaces of the fourth preferred embodimentis the same as that of the first preferred embodiment, and thedefinitions are the same as well.

The exact parameters of the fourth preferred embodiment (with 555 nm asthe main reference wavelength) based on Table 7 and Table 8 are listedin the following table:

Fourth preferred embodiment (Reference wavelength: 555 nm) InRS31 InRS32HVT31 HVT32 |ODT|% |TDT|% −0.02005 −0.19749 0.52972 0.78695 1.540481.47872 |f/f1| |f/f2| |f/f3| |f1/f3| |f1/f2| |f2/f3| 1.29137 0.678670.33432 3.86270 1.90279 2.03002 ΣPPR/ ΣPPR ΣNPR |ΣNPR| ΣPP ΣNP f1/ΣPP1.62569 0.67867 2.39539 7.32021 −2.86442 0.20565 InTL HOS HOS/HOIInS/HOS InTL/HOS ΣTP/InTL 2.74128 1.91719 1.51118 0.99208 0.699380.84933 HVT32/ HVT32/ |InRS31|/TP3 |InRS32|/TP3 HOI HOS 0.0253 0.24930.4338 0.2871 (TP1 + IN12)/ (TP3 + IN23)/ IN12/f TP2 TP2 TP2/ΣTP 0.138314.25893 4.25893 0.11710

The exact parameters related to inflection points of the fourthpreferred embodiment (with main reference wavelength as 555 nm) based onTable 7 and Table 8 are listed in the following table:

Values related to the inflection points of the fourth preferredembodiment (Reference wavelength: 555 nm) HIF111 0.37301 HIF111/HOI0.20563 SGI111 0.04448 |SGI111|/(|SGI111| + TP1) 0.06446 HIF211 0.32570HIF211/HOI 0.17955 SGI211 −0.12649 |SGI211|/(|SGI211| + TP2) 0.39882HIF221 0.33085 HIF221/HOI 0.18239 SGI221 −0.09383 |SGI221|/(|SGI221| +TP2) 0.32980 HIF311 0.26785 HIF311/HOI 0.14766 SGI311 0.01787|SGI311|/(|SGI311| + TP3) 0.02206 HIF321 0.40640 HIF321/HOI 0.22403SGI321 0.03275 |SGI321|/(|SGI321| + TP3) 0.03970

Fifth Preferred Embodiment

As shown in FIG. 5A and FIG. 5B, an optical image capturing system ofthe fifth preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, an aperture 500, afirst lens 510, a second lens 520, a third lens 530, an infrared raysfilter 570, an image plane 580, and an image sensor 590. HOI is a halfof a diagonal of an effective sensing area of an image sensor 590, andis 1.082 mm.

The first lens 510 has positive refractive power, and is made ofplastic. An object-side surface 512 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 514thereof, which faces the image side, is a concave aspheric surface.

The second lens 520 has positive refractive power, and is made ofplastic. An object-side surface 522 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 524thereof, which faces the image side, is a convex aspheric surface. Theimage-side surface 524 has two inflection points.

The third lens 530 has negative refractive power, and is made ofplastic. An object-side surface 532, which faces the object side, is aconvex aspheric surface, and an image-side surface 534, which faces theimage side, is a concave aspheric surface. The object-side surface 532has three inflection points thereon, and the image-side surface 534 hasan inflection point thereon.

The infrared rays filter 570 is made of glass, and between the thirdlens 530 and the image plane 580. The infrared rays filter 570 gives nocontribution to the focal length of the system.

The parameters of the lenses of the fifth preferred embodiment are|f2|=1.387 mm; |f1|=1.452 mm; and |f2|<|f1|, where f1 is a focal lengthof the first lens 510; f2 is a focal length of the second lens 520.

The optical image capturing system of the fifth preferred embodimentfurther satisfies TP2=0.242 mm and TP3=0.294 mm, where TP2 is athickness of the second lens 520 on the optical axis, and TP3 is athickness of the third lens 530 on the optical axis.

In the fifth preferred embodiment, the first and the second lenses 510,520 are positive lenses, and their focal lengths are f1 and f2respectively. The optical image capturing system of the fifth preferredembodiment further satisfies ΣPP=f1+f2=2.83947 mm andf1/(f1+f2)=0.51149, where ΣPP is a sum of the focal lengths of eachpositive lens. It is helpful to share the positive refractive power ofthe first lens 510 to the other positive lens to avoid the significantaberration caused by the incident rays.

The optical image capturing system of the fifth preferred embodimentfurther satisfies ΣNP=f3, where ΣNP is a sum of the focal lengths ofeach negative lens.

The parameters of the lenses of the fifth preferred embodiment arelisted in Table 9 and Table 10.

TABLE 9 f = 1.340 mm; f/HEP = 2.46; HAF = 38.834 deg; tan(HAF) = 0.8050Focal Radius of curvature Thickness Refractive length Surface (mm) (mm)Material index Abbe number (mm) 0 Object plane 600 1 plane 0.102 2Aperture plane −0.08312 3 1^(st) lens 0.49281 0.29050 plastic 1.53556.05 1.452 4 1.06545 0.21304 5 2^(nd) lens −0.96594 0.24240 plastic1.535 56.05 1.387 6 −0.45709 0.03527 7 3^(rd) lens 16.05009 0.29395plastic 1.535 56.05 −1.254 8 0.64146 0.10900 9 Filter plane 0.21 10plane 0.237 11 Image plane 0 plane Reference wavelength: 555 nm

TABLE 10 Coefficients of the aspheric surfaces Surface 3 4 5 6 7 8 k =2.01824E−02 9.55965E+00 −4.41020E+01 −1.23809E+01 −1.53530E+04−6.45641E+00 A4 = 2.73779E−01 9.36063E−01 −3.97557E+00 −9.99887E+00−2.47339E+00 −2.76537E+00 A6 = −1.74068E+01  6.83878E+00  2.79159E+01 1.81093E+02  1.54556E+01  1.48443E+01 A8 = 1.22816E+03 −9.31427E+02  1.39349E+03 −2.00026E+03 −5.09297E+01 −6.18536E+01 A10 = −3.35987E+04 3.32362E+04 −5.27979E+04  1.50954E+04  1.29379E+02  1.67430E+02 A12 =4.95528E+05 −5.79704E+05   7.72144E+05 −7.06870E+04 −2.55156E+02−2.67187E+02 A14 = −3.90842E+06  4.95867E+06 −5.01063E+06  1.84693E+05 2.71245E+02  1.81948E+02 A16 = 1.30544E+07 −1.63270E+07   3.64087E+06−2.22351E+05 −6.02299E+01  9.99102E+01 A18 = 0.00000E+00 0.00000E+00 1.14092E+08  3.64341E+04 −6.24963E+01 −2.46729E+02 A20 = 0.00000E+000.00000E+00 −4.19185E+08  8.63213E+04 −2.79496E+00  1.15666E+02

An equation of the aspheric surfaces of the fifth preferred embodimentis the same as that of the first preferred embodiment, and thedefinitions are the same as well.

The exact parameters of the fifth preferred embodiment (with 555 nm asthe main reference wavelength) based on Table 9 and Table 10 are listedin the following table:

Fifth preferred embodiment (Reference wavelength: 555 nm) InRS31 InRS32HVT31 HVT32 |ODT|% |TDT|% −0.03679 −0.04875 0.07573 0.45922 0.813600.57628 |f/f1| |f/f2| |f/f3| |f1/f3| |f1/f2| |f2/f3| 0.92259 0.966001.06842 0.86351 0.95506 0.90414 ΣPPR/ (TP1 + IN12)/ (TP3 + IN23)/ ΣPPRΣNPR |ΣNPR| TP2 TP2 TP2/ΣTP 1.88859 1.06842 1.76764 1.35819 1.358190.29316 ΣPP ΣNP f1/ΣPP IN12/f 2.83947 −1.2541 0.51149 0.15899 InTL HOSHOS/HOI InS/HOS InTL/HOS ΣTP/InTL 1.63116 1.07516 1.50754 0.949040.65914 0.76905 HVT32/ HVT32/ |InRS31|/TP3 |InRS32|/TP3 HOI HOS 0.125160.16586 0.42441 0.28153

The exact parameters related to inflection points of the fifth preferredembodiment (with main reference wavelength as 555 nm) based on Table 9and Table 10 are listed in the following table:

Values related to the inflection points of the fifth preferredembodiment (Reference wavelength: 555 nm) HIF221 0.261825 HIF221/HOI0.241982 SGI221 −0.0633236 |SGI221|/(|SGI221| + TP2) 0.20713 HIF2220.415454 HIF222/HOI 0.383969 SGI222 −0.113198 |SGI222|/(|SGI222| + TP2)0.318336 HIF311 0.04297 HIF311/HOI 0.039713 SGI311 0.000048|SGI311|/(|SGI311| + TP3) 0.000163 HIF312 0.358423 HIF312/HOI 0.33126SGI312 −0.0163614 |SGI312|/(|SGI312| + TP3) 0.052725 HIF313 0.538607HIF313/HOI 0.497788 SGI313 −0.0314042 |SGI313|/(|SGI313| + TP3) 0.096522HIF321 0.202546 HIF321/HOI 0.187196 SGI321 0.0247325|SGI321|/(|SGI321| + TP3) 0.077608

Sixth Preferred Embodiment

As shown in FIG. 6A and FIG. 6B, an optical image capturing system ofthe sixth preferred embodiment of the present invention includes, alongan optical axis from an object side to an image side, an aperture 600, afirst lens 610, a second lens 620, a third lens 630, an infrared raysfilter 670, an image plane 680, and an image sensor 690. HOI is a halfof a diagonal of an effective sensing area of an image sensor 690, andis 1.285 mm.

The first lens 610 has positive refractive power, and is made ofplastic. An object-side surface 612 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 614thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 612 has an inflection point thereon.

The second lens 620 has negative refractive power, and is made ofplastic. An object-side surface 622 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 624thereof, which faces the image side, is a convex aspheric surface. Theobject-side surface 622 and the image-side surface 624 both have aninflection point thereon.

The third lens 630 has positive refractive power, and is made ofplastic. An object-side surface 632, which faces the object side, is aconvex aspheric surface, and an image-side surface 634, which faces theimage side, is a concave aspheric surface. The object-side surface 632and the image-side surface 634 both have an inflection point thereon.

The infrared rays filter 670 is made of glass, and between the thirdlens 630 and the image plane 680. The infrared rays filter 670 gives nocontribution to the focal length of the system.

The parameters of the lenses of the sixth preferred embodiment are|f2|=2.0290 mm; |f1|=1.0663 mm; and |f2|>|f1|, where f1 is a focallength of the first lens 610; f2 is a focal length of the second lens620.

The optical image capturing system of the sixth preferred embodimentfurther satisfies TP2=0.135 mm and TP3=0.561 mm, where TP2 is athickness of the second lens 620 on the optical axis, and TP3 is athickness of the third lens 630 on the optical axis.

In the sixth preferred embodiment, the first and the third lenses 610,630 are positive lenses, and their focal lengths are f1 and f3respectively. The optical image capturing system of the sixth preferredembodiment further satisfies ΣPP=f1+f3=5.1852 mm and f1/(f1+f3)=0.2056,where ΣPP is a sum of the focal lengths of each positive lens. It ishelpful to share the positive refractive power of the first lens 610 tothe other positive lens to avoid the significant aberration caused bythe incident rays.

The optical image capturing system of the sixth preferred embodimentfurther satisfies ΣNP=f2, where ΣNP is a sum of the focal lengths ofeach negative lens.

The parameters of the lenses of the sixth preferred embodiment arelisted in Table 11 and Table 12.

TABLE 11 f = 1.377 mm; f/HEP = 2.2; HAF = 42.965 deg; tan(HAF) = 0.9314Focal Radius of curvature Thickness Refractive length Surface (mm) (mm)Material index Abbe number (mm) 0 Object plane 1699.7 1 Aperture plane−0.01538 2 1st lens 0.99946 0.45730 plastic 1.544 56.09 1.066 3 −1.168600.19045 4 2nd lens −0.25709 0.13506 plastic 1.642 22.46 −2.029 5−0.38562 0.01416 6 3rd lens 0.97546 0.56104 plastic 1.544 56.09 4.119 71.37305 0.07384 8 Filter plane 0.12465 BK_7 1.517 64.13 9 plane 0.3852510 Image plane plane Reference wavelength: 555 nm. The clear aperture ofthe fifth surface is 0.473 mm

TABLE 12 Coefficients of the aspheric surfaces Surface 2 3 4 5 6 7 k =−1.110676E−01 −4.913818E+01 −3.233806E+00 −2.778199E+00 −5.922462E+01−5.226612E+00 A4 = −7.777283E−01 −5.903434E+00 −1.010840E+01−4.870049E+00 −5.911731E−01 −1.097345E+00 A6 =  9.284607E+00 6.822082E+01  1.376425E+02  9.271630E+01  8.256159E+00  4.220370E+00 A8= −3.220373E+02 −1.122836E+03 −4.899302E+02 −8.091214E+02 −1.581175E+02−1.423107E+01 A10 =  3.948275E+03  1.281233E+04 −2.040256E+03 6.865803E+03  1.501177E+03  3.088007E+01 A12 = −1.210940E+04−8.266124E+04  3.271959E+04 −4.071413E+04 −8.705582E+03 −4.231811E+01A14 = −2.741079E+05  2.729844E+05 −1.990539E+05  1.376721E+05 3.102656E+04  3.389354E+01 A16 =  3.280170E+06 −3.636673E+05 6.940099E+05 −2.386238E+05 −6.421165E+04 −1.419487E+01 A18 =−1.301966E+07  4.434106E+03 −1.236418E+06  1.855731E+05  6.634256E+04 2.886692E+00 A20 =  1.330408E+07 −7.527641E+03  7.542850E+05−7.965808E+04 −2.216931E+04 −6.863467E−01

An equation of the aspheric surfaces of the sixth preferred embodimentis the same as that of the first preferred embodiment, and thedefinitions are the same as well.

The exact parameters of the sixth preferred embodiment (with 555 nm asthe main reference wavelength) based on Table 11 and Table 12 are listedin the following table:

Sixth preferred embodiment (Reference wavelength: 555 nm) InRS31 InRS32HVT31 HVT32 |ODT|% |TDT|% −0.01421 −0.13996 0.37523 0.55745 1.540491.47869 |f/f1| |f/f2| |f/f3| |f1/f3| |f1/f2| |f2/f3| 1.29137 0.678670.33432 3.86270 1.90279 2.03003 ΣPPR/ ΣPPR ΣNPR |ΣNPR| ΣPP ΣNP f1/ΣPP1.62569 0.67867 2.39539 5.18515 −2.02896 0.20565 InTL HOS HOS/HOIInS/HOS InTL/HOS ΣTP/InTL 1.94174 1.35801 1.51108 0.99208 0.699380.84933 HVT32/ HVT32/ |InRS31|/TP3 |InRS32|/TP3 HOI HOS 0.0253 0.24950.4338 0.2871 (TP1 + IN12)/ (TP3 + IN23)/ IN12/f TP2 TP2 TP2/ΣTP 0.138314.25892 4.25892 0.11710

The exact parameters related to inflection points of the sixth preferredembodiment (with main reference wavelength as 555 nm) based on Table 11and Table 12 are listed in the following table:

Values related to the inflection points of the sixth preferredembodiment (Reference wavelength: 555 nm) HIF111 0.2642 HIF111/HOI0.2056 SGI111 0.0315 |SGI111|/(|SGI111| + TP1) 0.0645 HIF211 0.2307HIF211/HOI 0.1795 SGI211 −0.0896 |SGI211|/(|SGI211| + TP2) 0.3988 HIF2210.2344 HIF221/HOI 0.1824 SGI221 −0.0665 |SGI221|/(|SGI221| + TP2) 0.3298HIF311 0.1897 HIF311/HOI 0.1477 SGI311 0.0127 |SGI311|/(|SGI311| + TP3)0.0221 HIF321 0.2878 HIF321/HOI 0.2240 SGI321 0.0232|SGI321|/(|SGI321| + TP3) 0.0397

It must be pointed out that the preferred embodiments described aboveare only some preferred embodiments of the present invention. Allequivalent structures which employ the concepts disclosed in thisspecification and the appended claims should fall within the scope ofthe present invention.

What is claimed is:
 1. An optical image capturing system, in order alongan optical axis from an object side to an image side, comprising: afirst lens having positive refractive power; a second lens havingrefractive power; a third lens having refractive power; and an imageplane; wherein the optical image capturing system consists of the threelenses with refractive power; at least two of the three lenses each hasat least an inflection point on at least a surface thereof; the thirdlens has an object-side surface, which faces the object side, and animage-side surface, which faces the image side, and both the object-sidesurface and the image-side surface of the third lens are asphericsurfaces; wherein the optical image capturing system satisfies:1.2≦f/HEP≦6.0; and 0.5≦HOS/f≦1.42; where f1, f2, and f3 are focallengths of the first lens to the third lens, respectively; f is a focallength of the optical image capturing system; HEP is an entrance pupildiameter of the optical image capturing system; and HOS is a distance inparallel with the optical axis from an object-side surface of the firstlens to the image plane.
 2. The optical image capturing system of claim1, wherein the optical image capturing system further satisfies: 0deg<HAF≦70 deg; |TDT|<60%; and |ODT|<50%; where HAF is a half of a viewangle of the optical image capturing system; TDT is a TV distortion; andODT is an optical distortion.
 3. The optical image capturing system ofclaim 1, wherein the third lens has at least an inflection point on eachof the surfaces thereof.
 4. The optical image capturing system of claim1, wherein the optical image capturing system further satisfies: 0mm<HIF≦5 mm; where HIF is a distance perpendicular to the optical axisbetween any inflection point and the optical axis.
 5. The optical imagecapturing system of claim 4, wherein the optical image capturing systemfurther satisfies: 0<HIF/InTL≦5; where InTL is a distance in parallelwith the optical axis between the object-side surface of the first lensand the image-side surface of the third lens.
 6. The optical imagecapturing system of claim 4, further comprising an aperture and an imagesensor on the image plane, wherein the optical image capturing systemfurther satisfies: 0.5≦InS/HOS≦1.1; and 0<HIF/HOI≦0.9; where InS is adistance in parallel with the optical axis between the aperture and theimage plane; and HOI is a half of a diagonal of an effective sensingarea of an image sensor provided on the image plane.
 7. The opticalimage capturing system of claim 1, wherein the third lens has positiverefractive power.
 8. The optical image capturing system of claim 1,wherein the optical image capturing system further satisfies:0.5≦InTL/HOS≦0.9; where InTL is a distance in parallel with the opticalaxis between the object-side surface of the first lens and theimage-side surface of the third lens.
 9. The optical image capturingsystem of claim 5, wherein the optical image capturing system furthersatisfies: 0<HOS/HOI≦1.63; where HOI is a half of a diagonal of aneffective sensing area of an image sensor provided on the image plane.10. An optical image capturing system, in order along an optical axisfrom an object side to an image side, comprising: a first lens havingpositive refractive power; a second lens having refractive power,wherein at least one surface of the second lens has at least oneinflection point thereon; a third lens having refractive power, whereinat least one surface of the third lens has at least one inflection pointthereon; and an image plane; wherein the optical image capturing systemconsists of the three lenses with refractive power; the third lens hasan object-side surface, which faces the object side, and an image-sidesurface, which faces the image side, and both the object-side surfaceand the image-side surface of the third lens are aspheric surfaces;wherein the optical image capturing system satisfies: 1.2≦f/HEP≦6.0;0.5≦HOS/f≦1.42; 0.4≦|tan(HAF)|≦3.0; |TDT|<60%; and |ODT|≦50%; where f1,f2, and f3 are focal lengths of the first lens to the third lens,respectively; f is a focal length of the optical image capturing system;HEP is an entrance pupil diameter of the optical image capturing system;HOS is a distance in parallel with the optical axis between anobject-side surface, which face the object side, of the first lens andthe image plane; HAF is a half of a view angle of the optical imagecapturing system; TDT is a TV distortion; and ODT is an opticaldistortion.
 11. The optical image capturing system of claim 10, whereinthe object-side surface and the image-side surface of the third lensboth have at least one inflection point thereon.
 12. The optical imagecapturing system of claim 10, wherein at least one of the surfaces ofthe first lens and the second lens respectively has at least oneinflection point thereon.
 13. The optical image capturing system ofclaim 10, wherein the optical image capturing system further satisfies:0 mm<HOS≦5 mm.
 14. The optical image capturing system of claim 10,wherein the optical image capturing system further satisfies: 0mm<InTL≦3.5 mm; where InTL is a distance in parallel with the opticalaxis between the object-side surface of the first lens and theimage-side surface of the third lens.
 15. The optical image capturingsystem of claim 10, wherein the optical image capturing system furthersatisfies: 0 mm<ΣTP≦2.6 mm; where ΣTP is a sum of central thicknesses ofthe lenses, which have refractive power, on the optical axis.
 16. Theoptical image capturing system of claim 10, wherein the optical imagecapturing system further satisfies: 0<SGI321/(TP3+SGI321)≦0.6; whereSGI321 is a displacement in parallel with the optical axis from a pointon the image-side surface of the third lens, through which the opticalaxis passes, to the inflection point, which is the closest to theoptical axis, on the image-side surface of the third lens; and TP3 is athickness of the third lens on the optical axis.
 17. The optical imagecapturing system of claim 10, wherein the optical image capturing systemfurther satisfies: 0<IN12/f≦0.3; where IN12 is a distance on the opticalaxis between the first lens and the second lens.
 18. The optical imagecapturing system of claim 10, wherein the optical image capturing systemfurther satisfies: 0<|f/f2|≦2.
 19. The optical image capturing system ofclaim 10, wherein the optical image capturing system further satisfies:0<|f/f1|≦2; 0<|f/f2|≦2; and 0<|f/f3|≦3.
 20. An optical image capturingsystem, in order along an optical axis from an object side to an imageside, comprising: a first lens having positive refractive power, whereinan image-side surface thereof, which faces the image side, is convexnear the optical axis; at least one surface between an object-sidesurface, which faces the object side, and the image-side surface thereofhas at least one inflection point thereon; a second lens having negativerefractive power, wherein at least one surface between an object-sidesurface, which faces the object side, and an image-side surface, whichfaces the image side, thereof has at least one inflection point thereon;a third lens having refractive power, wherein at least one surfacebetween an object-side surface, which faces the object side, and animage-side surface, which faces the image side, thereof has at least oneinflection point thereon; and an image plane; wherein the optical imagecapturing system consists of the three lenses having refractive power;the object-side surface and the image-side surface of the third lens areaspheric surfaces; wherein the optical image capturing system satisfies:1.2≦f/HEP≦3.0; 0.4≦|tan(HAF)|≦1.0; 0.5≦HOS/f≦1.42; |TDT|≦60%; and|ODT|≦50%; where f1, f2, and f3 are focal lengths of the first lens tothe third lens, respectively; f is a focal length of the optical imagecapturing system; HEP is an entrance pupil diameter of the optical imagecapturing system; HAF is a half of a view angle of the optical imagecapturing system; HOS is a distance in parallel with the optical axisbetween an object-side surface, which face the object side, of the firstlens and the image plane; TDT is a TV distortion; and ODT is an opticaldistortion.
 21. The optical image capturing system of claim 20, whereinthe optical image capturing system further satisfies: 0<HOS/HOI≦1.63;where HOI is a half of a diagonal of an effective sensing area of animage sensor provided on the image plane.
 22. The optical imagecapturing system of claim 21, wherein the optical image capturing systemfurther satisfies: 0 mm<HIF≦5 mm; where HIF is a distance perpendicularto the optical axis between the inflection points and the optical axis.23. The optical image capturing system of claim 20, wherein the thirdlens has at least an inflection point on each surface thereof; and theoptical image capturing system further satisfies: 0.5≦ΣPPR/|ΣNPR|≦4.5;where PPR is a ratio of the focal length f of the optical imagecapturing system to a focal length fp of each of lenses with positiverefractive power; NPR is a ratio of the focal length fn of the opticalimage capturing system to a focal length fn of each of lenses withnegative refractive power; ΣPPR is a sum of the PPRs of each positivelens, and ΣNPR is a sum of the NPRs of each negative lens.
 24. Theoptical image capturing system of claim 23, further comprising anaperture and an image sensor on the image plane, wherein the opticalimage capturing system further satisfies: 0.5≦InS/HOS≦1.1; and 0mm<HOS≦4.5 mm; where InS is a distance in parallel with the optical axisbetween the aperture and the image plane.
 25. The optical imagecapturing system of claim 23, wherein the image sensor has at least 8megapixels provided thereon, and the image sensor satisfies: PS≦(1.12μm)²; where PS is a size of each pixel.